This chronological account of the rise of American conceptual artist Jenny Holzer, while not exactly exploding the documentary genre, sheds light on an intriguing creative mind.

Using an ingenious mix of text, light and awareness of the power of architecture, Holzer makes works that comment on everything from advertising to the war in Iraq.

She began over 30 years ago with Truisms, textual observations that she projected onto buildings in ways that emulated advertisements and street art. The words, sometimes rhetorical, sometimes nonsensical, always make people think.

She's since expanded the concept, putting text onto sculptures to protest rape in Bosnia, for example, and deepening her political commentaries beyond her original provocative wordplay.

What's so wonderful about Holzer, apart from the work, is that she's all Midwestern straight talk - she still spends much of her time on a farm in Ohio - and not the stereotypical effete, fashion-forward diva.

Yet she adapts to new environments and technologies in ways that always keep her relevant - even visionary.